the aim is to ease global dependency on oil and protect the environment. increasingly, farmers are therefore growing crops for fuel rather than food -- because it's more lucrative. this development is particularly acute in the us. almost 40% of the corn harvest is used for fuel. 37% becomes animal feed. that leaves just 11% for food, while 13% is exported. the german world hunger organization is alarmed. >> obviously demand for biofuel -- which has political support -- is one of the main causes of the shortage of agricultural goods. more than 8% of the world grain production is used to make bio ethanol. it puts the agricultural sector under enormous pressure and leads to price hikes. >> poor countries are especially hard hit. because they lack their own resources, they are forced to import grain. but prices are increasingly prohibitive. >> for people living off the equivalent of one euro a day and spending 50 to 60 cents on food staples, the inevitable result is hunger. >> the slightest jump in food prices affects more than one billion people -- that's one